The Earth on the Turtle's back

I didn't exactly know what the poem was trying to say, so much was going on at once. But it seemed as a lot of stress was relieved when the muskrat said "I will bring up the Earth or die trying". This to me shows a lot of heart and determination. So maybe what the poem is trying to say is that we will be  faced with obstacles everyday and no matter how impossible they seem if you give it your all till you have no more you can overcome anything.